harvey/rc/bin/window

#!/bin/rc
# window [many options] cmd [arg...] - create new window and run cmd in it
rfork e
fn checkwsys{
	if(~ $wsys ''){
		echo  'window: $wsys not defined'
		exit bad
	}
}

# original version used mount to do the work
fn oldway{
	switch($#*){
	case 0 1
		echo usage: window '''minx miny maxx maxy''' cmd args ...
		exit usage
	}
	
	checkwsys
	
	dir = /mnt/wsys
	srv = $wsys
	
	rfork ne
	{
		if(x=`{cat /dev/ppid}; mount $srv $dir N`{{echo $x $1 }| sed 's/^ //g;s/ +/,/g'}){
			shift
			bind -b $dir /dev
			echo -n `{basename $1} > /dev/label >[2] /dev/null
			exec $* < /dev/cons > /dev/cons >[2] /dev/cons
		}
	}&
}

# if argument is of form '100 100 200 200' or '100,100,200,200' use old way
if(~ $1 *[0-9][' ,'][0-9]*){
	oldway $*
	exit
}

# geometry parameters are:
#	-r 0 0 100 100
#	-dx n
#	-dy n
#	-minx n
#	-miny n
#	-maxx n
#	-maxy n
# where n can be a number, to set the value, or +number or -number to change it

# find wctl file
fn getwctl{
	if(~ $wctl ''){
		if(test -f /dev/wctl) echo /dev/wctl
		if not if(test -f /mnt/term/dev/wctl) echo /mnt/term/dev/wctl
		if not if(~ $service cpu) echo /mnt/term/srv/riowctl.*.*
		if not {
			echo window: '$wctl' not defined >[1=2]
			exit usage
		}
	}
	if not echo $wctl
}

# use mount to make local window
if(~ $1 -m){
	shift

	checkwsys
	
	dir = /mnt/wsys
	srv = $wsys
	rfork ne
	{
		unmount /mnt/acme /dev >[2]/dev/null
		if(mount $srv $dir 'new -pid '^`{cat /dev/ppid}^' '$"*){
			bind -b $dir /dev
			# toss geometry parameters to find command
			while(~ $1 -*)
				switch($1){
				case -dx -dy -minx -miny -maxx -maxy
					shift 2
				case -r
					shift 5
				case -scroll
					shift
				case -noscroll
					shift
				case -hide
					shift
				}
			if(~ $#* 0) cmd = rc
			if not cmd = $*
			echo -n `{basename $cmd(1)} > /dev/label >[2] /dev/null
			exec $cmd < /dev/cons > /dev/cons >[2] /dev/cons
		}
	}&
}

if not echo new -cd `{pwd} $* >> `{getwctl}